I sometimes use claud to review texts. No matter what you give it, it always says: this is good, this could use improvement. If you change the part that “could use improvement”, it is never satisfied. It wil always give new points that should be improved. Even worse, if you give it the same text twice with a slighty different prompt or more context, it will give different points that are good or could use improvement. Sometimes it even says something that had to be changed before is now suddenly the strongest sentence — load bearing even.
Clearly they instructed Claude to always give points to improve regardless of if the text is good enough for its purpose. It is useful as a grammar and spelling check, and for validating that the content makes broad sense, but definitely not intelligent.